Quick answers
- Is CVE-2021-47923 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2021-47923 being exploited in the wild.
- How severe is CVE-2021-47923?
- Critical severity, with a CVSS score of 9.8, published 10 May 2026.
- Which products and versions are affected?
- OpenCart 3.0.3.8.
- Is there a fix for CVE-2021-47923?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2021-47923 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2021-47923?
- Check whether you run OpenCart at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A session fixation vulnerability exists in OpenCart version 3.0.3.8 due to improper processing of the OCSESSID cookie. The application fails to invalidate or regenerate session identifiers upon authentication and accepts arbitrary session IDs provided by the client. A remote, unauthenticated attacker can set a known OCSESSID value in a victim's browser; once the victim authenticates, the attacker can use the fixed session ID to bypass authentication and gain full access to the victim's session. This is classified as CWE-290 (Authentication Bypass by Spoofing) and can be exploited over the network without user interaction beyond the victim's normal login process.
Affected products
- OpenCart OpenCart 3.0.3.8
Timeline
- 2021-11-28: other: Vulnerability discovered and exploit code authored
- 2021-11-29: disclosed: Exploit published on Exploit-DB
- 2026-05-10: advisory: CVE published/updated in NVD via VulnCheck